<template>
  <view>
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <view class="price">
        ￥{{goods_info.goods_price}}
      </view>
      <view class="goods-info-body">
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <view class="yf">
        快递：免运费 --- {{cart.length}}---{{total}}
      </view>
    </view>
    <!-- 商品详情 -->
    <!-- <rich-text :nodes="goods_info.goods_introduce"></rich-text> -->
    <!-- 商品导航区 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onclick" @buttonClick=" buttonClick"></uni-goods-nav>
    </view>
  </view>
</template>

<script>
  import { mapState,mapMutations,mapGetters } from 'vuex'
  export default {
    watch: {
      total: {
        handler(newVal) {
          console.log('watch')
          const findResult = this.options.find(x => x.text === '购物车')
          if(findResult) findResult.info = newVal
        },
        immediate: true
      }
    },
    computed: {
      ...mapState('m_cart',['cart']),
      ...mapGetters('m_cart',['total'])
    },
    data() {
      return {
        goods_info: {},
        options: [{
            icon: 'shop',
            text: '店铺'
          },
          {
            icon: 'cart',
            text: '购物车'
          }
        ],
        buttonGroup:[{
          text: '加入购物车',
          backgroundColor: '#ff0000',
          color: '#fff'
        },
        {
          text: '立即购买',
          backgroundColor: '#ffa200',
          color: '#fff'
        }
        ]
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        if (res.meta.status !== 200) return uni.$showMsg()
        // 使用字符串replace（）方法为img标签添加行类style样式，从而解决图片底部空白间隙问题
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img/g, '<img style="display:block;" ')
        // 为 data 中的数据赋值
        this.goods_info = res.message
      },
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onclick(e) {
        console.log(e)
        if(e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/Cart/Cart'
          })
        }
      },
      buttonClick(e) {
        if(e.content.text === '加入购物车') {
          const goods = {
            goods_id: this.goods_info.goods_id, // 商品的Id
            goods_name: this.goods_info.goods_name, // 商品的名称
            goods_price: this.goods_info.goods_price, // 商品的价格
            goods_count: 1, // 商品的数量
            goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
            goods_state: true // 商品的勾选状态
          }
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
  swiper {
    height: 750rpx;

    image {
      width: 100%;
      height: 100%;
    }
  }

  // 商品信息区域的样式
  .goods-info-box {
    padding: 10px;
    padding-right: 0;

    .price {
      color: #c00000;
      font-size: 18px;
      margin: 10px 0;
    }

    .goods-info-body {
      display: flex;
      justify-content: space-between;

      .goods-name {
        font-size: 13px;
        padding-right: 10px;
      }

      // 收藏区域
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
    }

    // 运费
    .yf {
      margin: 10px 0;
      font-size: 12px;
      color: gray;
    }
  }
  
  // 商品导航区
  .goods-detail-container {
  // 给页面外层的容器，添加 50px 的内padding，
  // 防止页面内容被底部的商品导航组件遮盖
  padding-bottom: 50px;
  }
  .goods_nav {
  // 为商品导航组件添加固定定位
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  }
</style>
